165 lines
7.0 KiB
Python
165 lines
7.0 KiB
Python
from django.core.management.base import BaseCommand
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from django.core.management.color import no_style
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from optparse import make_option
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import sys
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import os
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try:
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set
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except NameError:
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from sets import Set as set # Python 2.3 fallback
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class Command(BaseCommand):
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option_list = BaseCommand.option_list + (
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make_option('--verbosity', action='store', dest='verbosity', default='1',
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type='choice', choices=['0', '1', '2'],
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help='Verbosity level; 0=minimal output, 1=normal output, 2=all output'),
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)
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help = 'Installs the named fixture(s) in the database.'
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args = "fixture [fixture ...]"
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def handle(self, *fixture_labels, **options):
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from django.db.models import get_apps
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from django.core import serializers
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from django.db import connection, transaction
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from django.conf import settings
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self.style = no_style()
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verbosity = int(options.get('verbosity', 1))
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show_traceback = options.get('traceback', False)
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# Keep a count of the installed objects and fixtures
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fixture_count = 0
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object_count = 0
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objects_per_fixture = []
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models = set()
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humanize = lambda dirname: dirname and "'%s'" % dirname or 'absolute path'
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# Get a cursor (even though we don't need one yet). This has
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# the side effect of initializing the test database (if
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# it isn't already initialized).
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cursor = connection.cursor()
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# Start transaction management. All fixtures are installed in a
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# single transaction to ensure that all references are resolved.
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transaction.commit_unless_managed()
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transaction.enter_transaction_management()
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transaction.managed(True)
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app_fixtures = [os.path.join(os.path.dirname(app.__file__), 'fixtures') for app in get_apps()]
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for fixture_label in fixture_labels:
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parts = fixture_label.split('.')
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if len(parts) == 1:
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fixture_name = fixture_label
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formats = serializers.get_public_serializer_formats()
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else:
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fixture_name, format = '.'.join(parts[:-1]), parts[-1]
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if format in serializers.get_public_serializer_formats():
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formats = [format]
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else:
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formats = []
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if formats:
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if verbosity > 1:
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print "Loading '%s' fixtures..." % fixture_name
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else:
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sys.stderr.write(
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self.style.ERROR("Problem installing fixture '%s': %s is not a known serialization format." %
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(fixture_name, format)))
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transaction.rollback()
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transaction.leave_transaction_management()
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return
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if os.path.isabs(fixture_name):
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fixture_dirs = [fixture_name]
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else:
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fixture_dirs = app_fixtures + list(settings.FIXTURE_DIRS) + ['']
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for fixture_dir in fixture_dirs:
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if verbosity > 1:
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print "Checking %s for fixtures..." % humanize(fixture_dir)
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label_found = False
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for format in formats:
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serializer = serializers.get_serializer(format)
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if verbosity > 1:
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print "Trying %s for %s fixture '%s'..." % \
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(humanize(fixture_dir), format, fixture_name)
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try:
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full_path = os.path.join(fixture_dir, '.'.join([fixture_name, format]))
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fixture = open(full_path, 'r')
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if label_found:
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fixture.close()
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print self.style.ERROR("Multiple fixtures named '%s' in %s. Aborting." %
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(fixture_name, humanize(fixture_dir)))
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transaction.rollback()
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transaction.leave_transaction_management()
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return
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else:
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fixture_count += 1
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objects_per_fixture.append(0)
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if verbosity > 0:
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print "Installing %s fixture '%s' from %s." % \
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(format, fixture_name, humanize(fixture_dir))
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try:
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objects = serializers.deserialize(format, fixture)
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for obj in objects:
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object_count += 1
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objects_per_fixture[-1] += 1
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models.add(obj.object.__class__)
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obj.save()
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label_found = True
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except (SystemExit, KeyboardInterrupt):
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raise
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except Exception:
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import traceback
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fixture.close()
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transaction.rollback()
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transaction.leave_transaction_management()
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if show_traceback:
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import traceback
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traceback.print_exc()
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else:
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sys.stderr.write(
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self.style.ERROR("Problem installing fixture '%s': %s\n" %
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(full_path, traceback.format_exc())))
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return
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fixture.close()
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except:
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if verbosity > 1:
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print "No %s fixture '%s' in %s." % \
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(format, fixture_name, humanize(fixture_dir))
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# If any of the fixtures we loaded contain 0 objects, assume that an
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# error was encountered during fixture loading.
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if 0 in objects_per_fixture:
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sys.stderr.write(
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self.style.ERROR("No fixture data found for '%s'. (File format may be invalid.)" %
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(fixture_name)))
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transaction.rollback()
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transaction.leave_transaction_management()
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return
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# If we found even one object in a fixture, we need to reset the
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# database sequences.
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if object_count > 0:
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sequence_sql = connection.ops.sequence_reset_sql(self.style, models)
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if sequence_sql:
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if verbosity > 1:
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print "Resetting sequences"
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for line in sequence_sql:
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cursor.execute(line)
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transaction.commit()
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transaction.leave_transaction_management()
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if object_count == 0:
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if verbosity > 1:
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print "No fixtures found."
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else:
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if verbosity > 0:
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print "Installed %d object(s) from %d fixture(s)" % (object_count, fixture_count)
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